package com.dayu.gulimall.member.exception;

/**
 * @author dayu
 * @version 1.0
 * @email dayu007@foxmail.com
 * @date 2021/3/15 23:22
 * @description
 */
public class UserNameExistException  extends RuntimeException{
    public UserNameExistException() {
        super("用户名已存在");
    }
}
